Phonograph.



F. D. LEWIS.

'PHONOGRAPH.

.PPLI 0ATION FILED APR. 12, 1909.

Patented Au 20, 1912.

zj j I 37/ FRANK D. LEWIS, OF ELIZABETH, NEW

JERSEY, Assicnon, BYMMESNE assrcnmnn'rs,

TO THOMAS A. EDISON, INCORPORATED; OF WEST ORANGE, JERSEY, A 6035-PORATION OF NEW JERSEY.

PHONOGRAPE.

Patented Aug. so, ieie.

Application filed April 12, 1909. Serial No. 489,411.

To all whom it may concern: Be it known that citizen of the UnitedStates, and a resident of Elizabeth, in the county of Union and State ofNew Jersey, have made a certain new and useful Invention in Phonographs,of which the following is a. description.

My invention relates one hundredthread thread records, may singlereproducer, single diaphragm, being record I, FRANK D. LEWIS, a,

' gaskets 3 and of floating weight ate, while the. other stylus is ininoperative 29 position. lprefer to in suchposit-ion. by; a. bodilymovement 0 the whole reproducer, preferablyby swing- I ing the samethrough an angle of 180 de-; 9 will be seen the shape of a thick gettergrees.

styluses referred to are remove one stylus from j operative position andplace the other stylus j I f that if Fig.1 2,. be held .With t ,epivotal t e Said W g to. also; have approximateiy' In carrying out myinvcntion .the two: mounted onstylus levers :which are preferably.pivotally mounted each on. a scparate-floatin'gweight. s

these-.two pfloatingl The. par of. ea h weight -which extends Theconstruction of weights, by: means of which the each may weight of beadvantageously. distributedand the construction made compact andefi'icient,

also forms thesubject matter of. one of the objects of invention;

Another object is the prqvisionlofim-fl roved means,- for pivoting thestylus levens 1 case of weight 9.. At these downwardlybent weights,wheree stylus-may be;

' for its: passage inithe other.

offmy invention reside in the details of construction and. combinationsof elements, as will be hereinafter described and claimed.

Attention is hereby directedftoithe a'c companyingdrawings forming partof this specification, which the same characandiin ters areus'ed-todenote corresponding parts. In the drawings, Figure 1 represents .a

59 central vertical section through my im- PI'OVBdfI GPPOdUGGI, some ofelementshee ing shown in side elevation. Fig. 2 is a bottom plan view ofthe same. 5

Referring to the drawings, the: diaphragm 55 l is securedanithe soundbox -2..bly.me ans of secured to the threaded pin 8, as is also common.

.of the sound; box.

The floatingweight 5 is piyotally secured by pin 6 to body of sound box2. by

metrically opposite to the pivotal 5, as has been describe the floating;weight 9 is, similarly mounted, being pivoted by ,pin 10 to 'block 11,which is piv'otedby threaded pin 12 to thebody As shown inthe plan v ewin Fig. 2, the floating weight 5 extends over substantially the wholearea of a circle exc-e t for .a central vupper portion of the same, sothat ifthe drawingbe held-with Diamountin adjusting ring has is common.

block7, which is pivotally the pivotal mounting of the floating. Weightshown in Fig. 2, at the top, the-we ght will be roughly theshapeofa vexyC. Similarly, the floating weight;9 covers substantiallythe whole areaof a circle with the exception oiia A central: ne '1 option, so

mounting of weight 9 above,

0.: By the conformation of th" weights just described it is possibleto/m unt the same compactly, the pivotal mounting 0f one weight beingabove the, tail-,of the other.

above thetail of, the other, as described, extends substantially Q;parallel to the diaphragm,, until the p has beeni removed 1s ,reached,when a sharp downward bend 5 occurs, 13 in the case of weight 5 aid. 14in the portions the two weights .pass, cjachKother, each extendingthrough Thus, the weight 9 extendsto the left from its pivotal mountingabove the tail of the weight fi until it descends at bend 1 1 from whichpoint it extends to its tail below the'pivotal :mountwhile weight 5extends to the right from its pivotal mounting above thetail of weight 9until the downward ben'd 13 is reached, after which point the weight 5extends to its tail below the pivotal mounting of weight 5,

stituting a. leverage extension;

such as shown not ht 9. By this method of mount- V thi k. letter art ;ofthe weight which the space prov d d Stylus lever 15 carried by floatingWeight 9 and stylus lever 16 is carried by floating Weight 5 in anyconvenient man-.

ner. Stylus 17 is secured to lever 15 and stylus 18 is carried by lever16, stylus 17, as shown, being adapted to codperate with the 100 threadrecords and stylus 18 with the 200 thread records, although, of course,it is obvious that my invention is not confined to records of theparticular character described. Lever 1.5 is pivoted to horizontal pin19 and lever 16 to horizontal pin 20, 'pin 19 being mounted in lugs 21and pin 20 in lugs 22.

Lugs 21 and 22 may be cast integral with the bottoms of their respectivefloating weights if desired, but I prefer to mount them as shown inorder to permit free movement of the respective Styluses transverse tothe record groove with which they are adapted to cooperate. Thus, thelugs 22 carrying stud 20 have formed integral therewith the threaded pin23, which is adapted to be screwed into a threaded hole in floatingweight 5. Lugs 21' carrying pin 19 on which lever 15 is mounted may haveformed integral therewith a corresponding threaded pin, which is screwedinto a threaded hole in floating weight 9. These screws are adjusted toproperly position the Styluses and afford pivotal movement of the styluslevers and the styluses carried thereby in a direction transverse to therecord groove. In yielding to whatever irregularity or curve of therecord causes movement of the stylus transverse to the groove, thethreaded pin as 23 will tend to screw itself slightly up or down in thefloating weight in which it is mounted, but the transverse movementswill be so slightthat the vertical movement thus given the levermounting will be inconsiderable. It is, however, obvious that I am notlimited to the style of pivotal mounting shown, but that any other meansby which the stylus may be allowed movement transverse to therecordgroove may be used, as for example, the pivotal mountdescribed in theapplication of Peter eber, Serial No. 456,701, filed October 8, 1908, orthat described in the application of Dyer and Neber, Serial No. 184,811,filed March 20, 1909, or any other convenient pivotal mounting. Thestylus levers 15 and 16 7 which are mounted as described are preferablybent so that Styluses 17 and 18 .are brought into the same diametricalline through the axis of the reproducer, which line is preferably thediameter of the re roducer b1secting the pivotal-mountings o the twoWeights. The tails of the two levers 15 and 18 are brought adjacent toeach other and are connected by the single link 24 to the center ofdiaphragm 1. In operation, when stylus 18 is engaging the record surfaceas shown in the drawings, stylus 17 is in- 1,o'se,279

operative and out of engagement. When it is desired to bring stylus 17into engagement with the record surface and place stylus 18 ininoperative position, reproducer 2 is lifted out of posit-ion and turnedthrough an angle of 180 degrees, whereupon the two styluses will haveinterchanged places.

It is obvious that I am not confined to the exact details ofconstruction, but that my invention is as broad as the wording of theappended claims.

Having now described my invention, what I claim and desire to protect byLetters Patent is as follows:

1..In a phonograph reproducer,'the combination with a sound box and adiaphragm mountedtherein, of a pair of interfitting floating weightscarried by said sound box, a stylus lever carried by each floatingweight, a stylus carried by each lever and 5 means for connecting saidlevers to the center of said diaphragm.

2. In a honograph reproducer, the com bination with a sound box and adiaphragm mounted therein, of a pair of interfitting floating weightspivoted to said sound box at diametrically opposite points thereof, astylus lever carried by each floating weight, a stylus carried by eachlever,,and means for connecting said levers to the center of saiddiaphragm, substantially as described.

3. In a honograph reproducer, the combination with a sound box and adiaphragm mounted therein, of a pair of interfitting floating weightscarried by said sound box, a stylus lever carried by each floatingweight, a stylus carried by each lever, and means for connecting saidlevers to the center of said diaphragm, each of said Weights having apart located directly above and a part located directly below the otherweight, substantially as described.

1 4:- In a phonograph reproducer, the combination with a sound box and adiaphragm mounted therein, of a pair of interfitting floating weightscarried by said sound box, a stylus lever carried by each floatingweight, a stylus carried by each lever, and

means for connecting said lever's to the center of said diaphragm, saidstylusesbeing located in a straight line intersecting the axis of thereproducer, substantially as described.

5. In a phonograph reproducer, the combination with a sound box and adiaphragm 120 mounted therein, of a pair of 'interfitting. Y

Weights to the sound box at diametricallyopposite points thereof, astylus lever carried by each weight, a stylus carried by each lever, andmeans for connecting the tails of the said levers to the diaphragm, eachweight extending partly above and partly below the other, substantiallyas described.

7. In a honograph reproducer, the combination with a sound box and adiaphragm, of a pair of interfitting floating weights means forpivotally m'ountin the sai weights to the sound'box at diametricallyopposite points thereof, a stylus lever car riedby each ,vveight, astylus carried by each lever, and means for connecting said levers tothe diaphragm, each Weight being formed With a leverage vextensionbeyond the fulcrum of the stylus lever carried by such Weight,substantially as described.- 1

This specification signed and witnessed this 9th day of April 1909 FRANKD. LEWIS.

Witnesses: I

DYER SMITH, JOHN M. CANFIELD.

popies of this patent may be obtained for flv'e cents each, byaddressing the Commissioner '0! 2mm.

Washington, D. 0.

